Ski



FIG. 1 is a top perspective view of a ski showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front-elevational view thereof;

FIG. 4 is a rear-elevational view thereof;

FIG. 5 is a right-side elevational view thereof, the side opposite being substantially a mirror-image; and

FIG. 6 is a cross sectional view taken along lines 6--6. 

The ornamental design for a ski, as shown and described. 